Printing telegraph apparatus



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lll Illlllllll nml llillu INVENTOR Y RAYMOND E. ZENNER BVM ll l. U M n. w l i.

|2'7 |28J (121 ATTORNEY Patented Jan. 4, 1938 PATENT OFFICE PRINTING TELEGRAPB APPARATUS Raymond E. Zenner, Brookfield, Ill., assignor to Teletype Corporation, Chicago, Ill.,a corporation of Delaware Application May 25, 1936, Serial No. 81,548

13 Claims.

ual operation of Vkey controlled recording 'apparatus, cognizance is taken of the tabulating time by the operator who, during such time, refrains from further operationof the keyboard. However, in automatic operation of such recording apparatus, by means of tape transmitters, in

` which case the apparatus is unattended for extended periods of time, it is desirable to simulate manual control during tabulation so as to suspend transmission automatically during the time that the carriage is in motion while tabulating, thus preventing the false operation of the recording apparatus.

The salient object of the present invention is to provide for suspending signal transmission during tabulation operations in response to a condition established in a transmitter.

Another object of the invention is to provide means for automatically interrupting the ltransmission of signals from a transmitting distributor during tabulation which is controlled primarily from the transmitting distributor and secondarily from the transmitter-control printer.

A feature of the invention resides in providing an extra set of contacts in a tape transmitter to be controlled by the tape sensing elements simultaneously with the control of the normally operated transmitting contacts. The sensing of a tabulation code combination in the tape not only causes the tabulation code signal to be transmitted to the receiving printer, but also causes the extra set of contacts to establish simultaneously an energizing circuit for a transmitter c1 it-out relay, which will remain energized during the tabulation period, whereupon by the opening of a contact in the receiving printer under the control of the tabulating mechanism therein, the energizing circuit for the cut-out relay is broken to initiate again the transmission of code signals.

The above and other objects of the invention are accomplished by the provision in a printing telegraph apparatus, of the type disclosed in U. S. Patent No.1,904,164, of a tabulator bar which extends across the front of the machine and is carried bylbrackets mounted in the typing unit and capable of swinging toward and away from the type carriage. The tabulator bar carries a number of adjustable stop-control members which determine the positions to which the type carriage is automatically spaced a plurality of character spaces upon the reception of a tabulator 5 code signal combination. The spacing mechanism of the printing apparatus comprises a multitoothed ratchet adapted to cooperate with a pair 0f pawls which are actuated by the printing bail to function las an escapement mechanism, so that upon each revolution of the main shaft, the spacing worm gear associated with the spacing ratchet is permitted under normal operating conditions to escape one tooth at a time and hence to rotate through a. corresponding angle.

According to the aforementioned patent, a series of function levers is provided which operate in accordance with the setting of the series of selector vanes. Within this series of function levers, the present invention contemplates the provision of a tabulating function lever which, when selected, is drawn forward into the selector vanes under spring tension. When this occurs, the rear extension of the function lever raises and thereby lifts the rear end of a horizontal lever member. When the rear end of this horizontal lever is raised. it lifts, through suitable linkage, the upper spacing paWl out of engage-- ment with the tooth of the spacing ratchet, at

'which time the front end of said horizontal mem- 30 ber is lowered, thereby unlatching the tabulating bar to permit the latter to be biased by its spring toward the type carriage. When the upper space pawl is thus disengaged, the lower space pawl returns to its normal position free of the teeth on the spacing escapement ratchet which permits the spacing worm to make one complete revolution instead of only one-third of a revolution during the time that the main shaft rotates through one revolution, and therefore the carriage will be spaced continuously a distance, per revolution of the main shaft, which is three times that of normal spacing distance.

To bring the carriage to rest after tabulating, it is necessary to permit the upper space pawl to drop again into engagement with a tooth on the spacing ratchet. This latter function is effected by the coaction of a cam element assembled to the carriage and one of the adjustable stop-control members carried by the tabulator bar. This cam forces or cams thetabulator bar forward or away from the carriage, against spring tension, and in so doing permits said horizontal member to be restored to its normal position into latching engagement with the tabulator bar. This restoration action of the horizontal member permits the upper space pawl again to fall into engagement with a tooth on the spacing ratchet, which thereupon brings the carriage to rest.

During the time in which the carriage is moving automatically from stop to stop during tabulation, it is necessary to suspend transmission of signalsto the printer, and accordingly the present invention provides an arm depending from the tabulator bar which cooperates with'a bell crank lever to control a contact in the operating circuit of a cut-out relay in the tape transmitting distributor. In this operating circuit is also included the aforementioned extra set of contacts, associated with and controlled by the tape sensing levers in said distributor, which are so wired or connected together that whenever said tape sensl ing levers assume a particular setting in response to a' predetermined code combination of perforations in the tape, said set of contacts will complete a series circuit including said contact in the printer, said set of contacts, and said cut-out relay. Thus, when the tabulation code signal is sensed by the sensing levers; the transmitter will cease to operate upon the completion of transmission of the tabulator signal, due to the opening of the start magnet circuit of the transmitter .under control of the cut-out relay, and thetabulator mechanism in the receiving apparatus will function in response to the tabulation signal to permit the type carriage or platen .-carriageVasthe case may be, to travelguninterruptedly to the next stop control member, whereat the tabulator bar will be cammed outwardly to cause the restorsimultaneously, through the cooperation of said depending arm and said bell crank, the contact controlled by said bell crank will be opened momentarily so that the operating circuit for said cut-out relay will be broken to permit the transmitting distributor again to operate.

A better understanding of the invention may be had from the following description, taken in conjunction with the accompanying drawing, wherein,

Fig. 1 is a front elevational view of the principal portion of the printing apparatus showing of the tape transmitter are controlled by the tape sensing levers.

In the accompanying drawing, like reference characters indicate similar parts throughout the several gures. For a complete understanding of details not disclosed herein and which form a part of the present invention, reference should be made to U. S. Patent No. 1,904,164 issued April 18, 1933 to S. Morton et al.

IBriey,` having reference to Figs. 1, 2, and 3, a printing apparatus to whichthe tabulating mechanism of the present invention is applied comprises a typing unit (indicated generally in Fig.

1) which includes a primary selecting mechais nism of which only the single selector magnet II ation of said tabulator mechanism to'normal, and

Fig; 5 shows the manner in which the switches is shown in Fig. l and which is of the sword-and- T-type disclosed in U. S. Patent No. 1,745,633

\ to S. Morton et al. (fully disclosed lin the first mentioned patent) Yand a secondary selector or selector vane assemblyindicated generally as I2. The selector vane assembly I2 controls through a set of bell lcranks I3 (Fig. 1) a corresponding set of curved code bars carried in a movable type carriage" indicated generally at I5. As set forth in the first mentioned patent, this type carriage is movable longitudinally with respect to a stationary platen not shown, but manifestly the invention is not hunted in its application to such apparatus.

Referring particularly to Fig. 2. a motor (not shown)` supplies power to a main operating shaft I9." which carries the spacing mechanism indicated generally |1 as well as the selector cam assembly (not shown) which cooperates with the selector magnet II. The spacing mechanism I1 controls through gear I3, shaft |9, gear 2|, and rack 22 (Fig. 2) the successive advancement of the type carriage Ilto form character spaces, tending in this movement to wind up a carriage return spring mechanism (not shown) which is eifective upon the receipt of the carriage return signal to effect, due to the energy stored up in said spring, the return of carriage I5 to its norauxiliary shaft 23 on which are carried various 4 mechanisms, Vfor example, printing bail 24, function lever bail 25, and the escapement elements of the spacing mechanism I'I. The printing bail 24, which is actuated by a spring 20 at the proper time in the operative cycle, functions to reciprocate a pull bar operating member 26 to cause,

through a pll bar 21, the operation of a particu- I lar type bar 23.

The selector .vanes 33 control a series of function levers among which, and provided especially for accomplishing the objectrof the presentinvention, is a tabulating function lever 29 which, like the other function levers, is pivoted on a common pivot rod 3| and is assembled in a slot in the'function lever comb 32. Function lever 29, A like the rest of the function levers of the series,y is provided with an individual spring 33 tensioned between the lever and the printer ,frame, thus tending to rotate the function lever 29 clockwise about pivot 3|. However, the biasing of lever 29 is restrained by the function lever'bail 25 acting through rod 34 on arm 35. Function lever 29 is provided on its arm 38 with code notches and projections which cooperate with the vanes of the selector vane assembly I2 and which are coded to correspond to the tabulator signal.

In Fig. 2 there is shown mounted on the main shaft I6 a sleeve member 31 which comprises integral therewith a ratchet 38 and a spacing worm 39 which meshes with gear I3. Sleeve member 31 is operably .connected to the shaftqlt by means of a friction clutch (not shown), and through which it is rotated by main shaft I6, unless blocked by the pawls of the spacing mechanism |41, as will presently appear.

Referring to Fig. 2, it will be noted that ratchet 33 is provided with three teeth 4I, 42, and 43, tHe escapement of which will allow the type carriage I5 to be moved forward one step or charlacter space for each actuationof the printing carried by the printing bail 24`. Spring 41 nor- 75 .since it is common to both le' rs.

maily tends tobia'slevers 44 and 48 attrahently, Lever 44 is y.normally urged by spring 41 i La counterclockv38 may be determined. The spacing operation occurs immediately following or subsequent' to the printing-of a character in the following manner.

To print a'character, the printing bail 24 oscillates, and in so doing controls the operation of lever 48. During the initial portion of the clockwise movevment of arm 48, lever 44 under the action of spring 41 also rotates clockwise to bring the laterally disposed end 53 into the path of tooth 42. It is noted that, due to the space indicated at 54 between lever 48 and laterally disposed end 55 of. lever 44, the latter will notI be acted upon, and end 48 thereof remains in engagement with tooth 4i. `However, upon the further clockwise movement of lever 48, the end of arm 55 is encountered and for this reason similar movement is then imparted'to lever 44, ef" fecting the disengagement of end 48 from tooth 4i and permitting ratchet 38 to rotate slightly in a clockwise direction under theiniluence of friction clutch members which are situated Isle-Y tween sleeve 31 and shaft i8. This motion is limited by the engagement of tooth 42 with laterally disposed end 53 of lever 45, which lever. as was noted, was free to rotate in a clockwise direction under the tension of spring 41 into the path of oncoming tooth 42. Ratchet 38 is thus restrained from rotation by lever 45 while the character is being printed, after which time, printing bai124 and associated lever 48 rotate in a counterclockwise direction actuated by a printing cam (not shown) carried on shaft I8. Restraint upon lever 44 by lever 48 through end 55 is thereby removed, permitting lever 44 to rotate in a counterclockwise direction under the inliuence of spring 41 into the path of oncoming tooth 43 of ratchet 38. During thisvcounterclockwise movement of lever 48,'and after the aforementioned removal of restraint upon lever 44,

, lever 45 is caused to rotate in a like direction due to the action of lever 48 on laterally disposed end 48 thereof, thereby disengaging end 53 of lever 45 from tooth 42 and allowing ratchet 38 to continue its rotation until arrested by the engagement of endl 48 of lever 44 with tooth 43. It is observed that as a result of the escapement mechanism just described, there is a period of overlap during which ends 48 and 53, due to the space indicated at 54 are eilective simultaneously to prevent the escapement of ratchet 38, the ends 48 and 53 being otherwise alternately engageable to permit the escapement of ratch- It is obvious that since spacing worm 38 and ratchet 38 are integrally connected to sleeve 31, the worm 38 will have normally the same intermittent or 'step-by-step motion as was hereinbefore seen to be imparted to ratchet 38. Worm 39 is meshed. as previously mentioned, with worm gear i8 which is rotatable on vertical shaft i8 j and may be operably connected thereto through the instrumentality of aiaw clutch 58. i Worm 88 and gear i8 are so related, according to the present embodiment, that one-third revolution of worm 38 will rotate gear I8 through a distance which, through gear 2| and ratchet 22, causes the type carriage l5 to be advanced the distance of one character space.

From the foregoing it wilLbe xobserved thatl character spacing .occurs automatically with the printing of each character; that is, the spacing function is incorporated into the printing operation. It iswell known that there is a code combinationjallotted to ,eachl type bar, but it, is ,possible, "however, to employ a code l' combination commonly k'nown .f'as the `space signal;` which is identified with no type'bar butwhich will never- `thelessinitiate the operation of the printing mechanism. Therefore, the spacing between words is accomplished, when a space signal is received, in exactly the same manner as just described, except that no type bar is operated and consequently there is no character printed.

In accordance with the present invention, continuous spacing may be effected upon the receipt of a code combination known as the tabulating signal, the function of which is to initiate the operation of the tabulating mechanism., The mechanically operating tabulating arrangement of the present invention comprises a tabulator bar 8| extending across the front of the printing apparatus as shown in Fig. 1, which is provided with depending portions 82 and 83 and through which bar l8i is pivotally mounted on a bracket 84 carried in theprinter frame. Thus, tabulator bar 8| is adapted to be swingable toward and away from the type carriage i5. Bar 8| is also provided with a longitudinal slot 85 extending substantially the entire length of the bar. In this slot are carried adiustably movable stop members 88 which are clamped to the bars 8i by meansof screws 81 and clamps 88 (Fig'. 2). As indicated in Fig. 4, these stop members 88 ae usually provided with an inclined or cam portion 89, conformed to produce a quick action upon cooperating with a cam element 1I carried by the type carriage i5 to 4terminate suddenly the l 1s (Fig. 1i.

Cooperating with the stepped portion 15 is one arm 11 of a lever 18 pivotally carried at 19 on a bracket 8i screwed to the function lever comb 82. 'I'he extremity of arm 11 is provided with a laterally disposed portion 82 (Fig. 1) which cooperates with portion 15 of member 13. At the end of arm 83 of lever 18 is carried a vertically extending member 84, the upper end of which is provided withgan open-ended slot adapted to engage a pin 85 carried by the escapement lever 44.

Function lever 28 is provided with a horizontal portion 88 so conformed that its extremity 81 engages the lower edge of arm 83 of lever 18 so that, when function lever 28 (upon its selection) is permitted to rotate in a clockwise direction under the action of its spring 33 upon the proper setting of the vanes 88 in response to the tabulator code signal, the end 81 thereof is raised, causing lever 18 to rock in a clockwise direction against the tension of its spring 88. The end 82 of arm 11 is thereby moved downwardly clear of portion 15, thus permitting spring 10 to urge the tabulator bar 8| inwardly (or toward the left as viewed in Fig. 2) until wall 8| oi' member 13 engages portion 82. Adjustable stops 88 are therefore movedkinwardly into the path of a cam member 1| (Fig. 4), which is pivoted at 82 on a portion 88 integrally formed on a bar 84, which is comparable to bai' 53 shown. in Fig. 1 of Patent No. 1,904,164, and which is employed for retaining the bell crank lever I3 in operable relation to vanes 88. Cam 1|, like bar 84 and bell cranks I3, is movable with the type carriage I5 for carriage spacing and normally tends to rotate in a clockwise direction about pivot l2 due to the action ofthe spring 85, but its clockwise rotation is limited by the coaction of stop pin 86, carried thereon, with the end of bar 84. Con sequently, upon the rightward movement of type carriage I5 (as viewed in Figsf. 1 and 4), cam 1| due to its limited rotatability in a clockwise direction will, by its camming action on stop member 66, rock tabulatorfbar 8|, outwardly; but upon the leftward movement of type carriage I5, cam 1I upon striking the series of stop members 88, will be rotated counterclockwlse against the action of spring 85 suiliciently to avoid the cam portion 88. y

Upon the clockwise rotation of llever 18'due to the selection of function lever 28, arm 83, and consequentlyl member 84 carried thereon, will be raised, `and in so doing'will, through pin 85, lift escapement lever 44 out of engagement with the teeth of the ratchet wheel 38 which, since the lever 45 is (after its oscillation by bail 24) prevented from engaging the teeth of the ratchet 38 due to its being held in its retracted position by lever 48, permits the worm gear 38 to make one complete revolution instead of One-third of a revolution during the time that they main shaft I6 rotates through one revolution. The carriage will be spaced continuously a distance per revolution of the main shaft whichis three times that of normal spacing, so long as the escapement lever 44 is held out of operative engagement with lever 38 which is maintained in this position. due to the engagement of lug 82 with the under side of step portion 15. Thus carriage I5 will be moved continuously until cam /J I coacts with one of the series of stops 88, when through stop 88 cam 1| will urge tabulator bar 6| outwardly or in a clockwise direction as viewed-in Fig. 2`to disengage lug 82 from portion 15, whereupon lever 18 will again be rotated in a counterclockwise direction by its spring 88 into the position shown in Fig. 2. The member 84,carried on arm 88 of lever 18 will again be lowered, permitting escapement lever 44 under action of spring 41 to engage one of the teeth 4I, 42, or 43 of ratchet 38.

The function lever 29, however, will be returned to its unselected position (as shown in Fig. 2), at the completion of the nrst revolution or cycle of operation of the main shaft I8, because of the fact that during the cyclepursuant to the reception of the tabulating signal, the function bail 25 p will have been reciprocated once so that rod 34,

upon the down stroke of bail 25, will permit spring 33 to urge lever 28 into cooperative relation with vanes 88 only llong enough to eii'ect the selection and hence the resulting disengagement of pawl 44, whereafter rod 34, upon its upward or return movement, will cam the function lever 28, through arm 35 thereof, away from the vanes 88 where it will be held until the reception of another code signal.

1t is manifest that during the time that the carriage I5 is moving to'eifect tabulation, that is from thetime'the tabulation signal is received up to the time when cam 1| engages the next stop 00, it is desirable to prevent the transmission and reception of succeeding character code si inasmuch as signals sent or received during the continuous movement of the type carriage during tabulation may not properly effectuate printing. This isespecially true in connection with automatic transmission; hence it is an object of the present invention to provide ,means for suspending the tron o! code signals during the tabulation operation. Accordingly, the tabulator bar 8| is provided with a depending tongue or portion |0I (Fig. 1) the lower end of which cooperates with a bell crank |02 pivoted at |03, Fig. 3, to a base |04. Arm |85 of bell crank |02 coacts with an insulated button |08 of a contact pair |24 mounted on a bracket |08 fixed to member 84. The pair of contacts |24 is connected in a series circuit including thesextra set of ntacts in the transmitting distributor. The transmitting distributor, indicated generally III, may be of the structure disclosed in U. S. patent to Kleinschmidt, No. 1,632,297, except that the extra set of contacts |24 are employedin addition tothe set of transmitting contacts ||2.

In the transmitting distributor III there is a set of tape sensing elements ||0 (Fig. 5) which under the control of a tape or signal storing medium 81, controls a. corresponding set of contacts ||2 connected directly on one side to a source of current, and on the other through individual conductors ||3 to segments ||4 of the suiower distributor I|5. A second set of contacts ||8 are also connected to the tape sensing elements ||0 and are actuated in response to the perforations in the tape in the same manner as are contacts II2. However, unlike contacts II2 which impress current from the common source of battery upon any one of the contacts thereof that are closed, certain ones of the contacts |I8 are permanently connected in series to correspond to the predetermined code combination allotted to the tabulation signal. For example, in Fig. 1, the contact portions ||1 are shown by their dotted-line positions coacting with upper contacts in the rst and third positions and withthe lower contacts in the second, fourth, and fth positions; and when the contacts, in response to the tabulation code perforated in the tape, assume their dotted line positions, a circuit is completed from battery, through winding of transmitter cut-out relay ||8, through lower contacts 5 and 4, through upper contact 3, thence through lower contact 42 and upper contact over conductor` II9, through a pair of contacts |2| (controlled by a universal 1 v 9,104,110 nwmn aiV bistn lever Y |11 reward the extending portionV |21 which coacts lwith portion |28 ofthe pair of jcontactsf|2| 'mounted on the base `||i4.1v It 'is'seen, therefore, that vsince the universal functionvlever |22 ris operated upon each full opscillation'of the printing bail 24,y contacts |2| are opened momentarily. The inner ring |3| ofthe transmitting', distributor is connected by conductors |32 to `the vwinding of the selector magnet I of the selector mechanism of the printingapparatus, and in the event that several printers are connected in series, each selector magnet I therein isint'erconnectedthrough the line wire |34. v f

The relay l|8,`whe`n energized upon the closing of the aforedescribed circuit including contacts ||8, |2|, and |24, closes contact |35 and opens contact |38. The closing of contact |35 causes, simultaneously, thek contacts |,I8 to be shunted, and a locking circuit to be established from b`attery, through winding of relay |I8, through contact |35, over conductors |31 and H8, through contact pair |2|,. over conductor |23, through contact pair'i24, to ground.- The opening of contact |38 breaks the energizing circuit for the start magnet |38 (assuming the manual switch |38 tobe closed). 'Ihe deenergization of the magnet |38 causes itsk armature |4| to `respond to the pull of its spring |42 to cause the end |43 thereof to arrest the commutator arm |44, which condition obtains to suspend transmission of signals during the tabulation period.

General loperation When the manual switch |39 is closed, a circuit is completed from battery |45, through windings of start magnet |38, over conductor |48, through manual switch |38, ,contact |38, and conductor |41, back to battery. The 'energization of start magnet |38 causes its amature |4| to be pulled up, which effects ythe disengagement of end |43 from the transmitting arm |44, thereby initiating rotation ofthe transmitting arm |44 to effect the transmission of code signals over conductor |32 in accordance with the operation of contacts ||2 under the control of the perforated tape. Printing will be effected and the carriage I5 will be advanced step-by-step in response to start-stop code signals transmitted from the transmitter i.

With the platen4 in the "letters orfunshift position, the universal function llever |22 will be operated upon the actuation of the function bail 25, thus opening contact 2| each time a character is printed. 'I'he occurrence of a tabulation signal causes the contact portions |1 to vassume their dotted line positions to effect the energization of relay |18, so that energization would merely be momentary because of the fact that universal function lever |22 would be operated and the contacts |2| would be open to break this energizing circuit. However; if the -platen is in the iigures or shiftposition (which is the position in which the tabulator function lever 29 is selectable) a different condition will arise. When the tabulator code signalis received with the platen in the shift position, the contact portions ||1 will assume their dotted line position, and the energizing circuit for relay ||8 will be completed,

" and since the function lever 29 isl selected, the

function bail will be preventedfrom making its full oscillation; that is, its downward movement will be prevented by the coaction of pro- Jection |48 with arm 35 of the tabulator function lever 29, thus preventing the universal function lever |22 )from operating and, being governed thereby, the contacts |'2| 1will remain closed. Re-

lay II8 will become energized and locked up over l its locking circuit which includes contact |35 (now closed). At the same time, contact |35 will be opened to break the energizing circuit for start magnet |38. (L

The selection of the tabulator function lever 28 will, through its end 81, cause lever 18 to rotate in a clockwise ydirection to disengage (through member '84) pawl 44 from tooth' 4|, and at the same time, end 82 of lever 18 will be disengaged from shoulder 15. permitting tabulator bar 8| to respond to the pull of its spring 18 to bring a stop 68 into the path of the pawl 1| (Fig. 4). Since pawls ,44 and 45 are both disengaged from the ratchet 38, shaft |8 is permitted to rotate continuously, and through worm 39, gears I8 and 2|, and rack 22 will cause the carriage I8 to be advanced continuously until pawl 1| reaches and actuates a cam portion 88 of the next stop 66, at which time the tabulator bar 8| will be cammed outwardlydor in a clock- Wiseidirection as viewed in Fig. `2) suiilcientiy to permit contacts |24 to open momentarily; that is, due to this camming action, a slight over-travel is imparted to the depending arm |0| so that arm |0| is actuated past its normal vertical position to the dotted line position shown in Fig. 3, and the resiliency of arm |49 of the kals,

pair of contacts |24 will cause the contacts |24 to separate, thus `xbreaking the aforedescribed locking circuit for relay ||8 to permit the contact to open and the contacts |38 to close. The closing of contacts |38 again establishes the energizing circuit for start magnet |38, permitting the transmitter arm |24 to rotate to effect of signals.

It is therefore \fnoted that when the tabulator signal is transmitted through the proper setting of contacts H2, and contacts 8 are set correspondingly, a circuit is compietedvthrough the latter contacts and the two pairs of contacts |2| and |24 in-,the printer, which energizes the relay ||8. The energization of relay v||8 causes its contact |35 to close, thereby (through the medium of conductor |31) shunting out contacts ||8 and ||1 to establish a locking circuit for relay H8, as previously traced. When the relay i|8 is energized, contact |38 is opened to break the circuit of the transmitter distributor start magnet |38. It is further observed that if the platen'of the printer is in the letters" or unshift position, the universal function lever |22 will be operated (and the tabulator function lever will remain unselected) and will momentarily open vthe pair of contacts |2| to break the locking circuit to the relay ||8, thus permitting the transmitter distributor start magnet |38 to again, afterva momentary interruption, become energized. On the other hand, if the platen of the printer is in the "iigures or shift position, the tabulator function lever 28 will be selected and, since printing and spacing are blocked during the performance of the tabulation operation, the universal lever |22 will not beselected (and hence will not open contacts I2 l') and the locking circuit for relay ||8 will remain closed until the type carriage |5 has reached the next tabuthe transmission of succeeding code combinations 'lator stop (l, momentarily opening (due to the over-travel oi' vthearm I li .by the coaction of pawl 1i and cam-portion Y e contacts |24 in the printing unit and thereby reaking the locking circuit of .the relay HQ.

It is understood that numerous changes may be made in the details 'set forth in the foregoing description without departing from the essentials of the invention or from the spirit and scope of equivalency thereof, as defined in the appended claims.

What is claimed is:

1. In combination. -a recorder responsive to signaling conditions, a transmitting apparatus comprising a tape transmitter, a-distributor having a normal rest position, a set of tape controlled contacts normally effective to control the operation of said recorder, another set of tape controlled contacts effective in response to a predetermined signal record in the tape' to control 'the-arrest of said distributor in its normal rest position. and means in said recorder eifective under certain operating conditions for restarting said start-stop distributor.

2. In a telegraph system, la transmitter having a first set of tape controlled contacts normally etective to control signal transmission, and a second set of tape controlled contacts effective in response to a predetermined signal record in the tape to establish other controlling conditions, a receiver responsive iso-signaling conditions comprising a functional instrumentality, and means controlled by said instrumentality and effective conjointly with said second set of contacts for controlling the effectiveness of said transmitter.

3. In combination, transmitting means effective under the control of a signal storing medium, said means having sensing means normally effective to control signal transmission, and means eifective in response to a predetermined signal record in said signal storing' medium as sensed by said sensing means to establish other controlling conditions, a receiver responsive to signalingconditions comprising a functional instrumentality, and means controlled by said instrumentality and eifective conjointly with said second recited means for controlling the eiectiveness of said sensing means.

4. In` combination, transmitting means eifective under the control of a signal storing medium, said means having a sensing means normally effective to control signal transmission,

and means effective in response to a predetermined signal in the signal storing medium as sensed by said sensing means to establish other controlling conditions, a recorder responsive to signaling conditions, tabulating mechanism, and means in said recorder controlled by said tabulating mechanism and eective conjointly with said second recited means for controlling the eectiveness of said sensing means.

5. In a telegraph system, a transmitter having a primary ang a secondary control means, a recorder having a carriage, spacing mechanism eiective normally under the control of said primary means, permutation code mechanism to control operations other than recording comprising a plurality of'function code levers, tabulating mechanism operative in response to the selective operation of a certain one of said levers to conltrol. through said spacing mechanism, the ad- ,ibauo for controlling said transmitter during the tabulation operation. y,

`6. In acontrol system for printing telegraph receivers comprising a-signal responsive means'. means .comprising primary and secondary instrumentalities, said primary instrumentality eifective for controlling the free operation of said means during signaling periods. and means controlled by the telegraph receiver and eifective conlointly with said'y secondary instrumentality to render said primary means ineifective during predetermined periods. f

7. In a telegraph system, a transmitter oper- A able under the control oi' a tapeftape sensing mechanism comprising a primary and a secondary instrumentality, a

f1# receiver responsive,

through said primary instrumentality, to signalf ing conditions, said receiver comprising a funcl tional agency, and means controlled by said agency and effective conjointly with said secondary instrumentality for controlling the eifectiveness of said primary instrumentality.

8. In a telegraph system, a transmitter operable under the control of a signal storing medium, primary and secondary elements underthe control of said signal storing medium, a receiver comprising a functional instrumentality, said receiver responsive, through said primary elements, to signaling conditions, and means eifective under the joint control of said instrumentality and said secondary elements for controlling the effectiveness of said primary elements.

9. In a telegraph system, a transmitter operable under the control of a tape, primary and secondary elements under the control of said tape, a receiver comprising a plurality of function members, said receiver responsive, through said primary elements, to signaling conditions, and means eifective under the joint control of one of said function members and said secondary elements for controlling the eifectiveness of said primary elements.

10. In combination. al telegraph recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space, means operable in cycles to actuate said spacingmechanism normally one character space for each cyclic operation of said cyclically operable means, means to disable 'said spacing mechanismwhereby said carriage is advanced a plurality of character spaces for each cycle of operation of said cyclically operable means, a transmitter comprising a primary and a secondary instrumentality, means for controlling the effectiveness of said primary instrumentality, and means in said recorder controlled by said disabling means effective conjointly with saidv secondary instrumentality for controlling the eifectiveness of said last mentioned means during the period of disablement of said spacing mechanism. f A

11. In combination, a recorder having a carriage movable to form character spaces, means to perform functions other than recording, a permutation device movable with said carriage to determine the character to be recorded, a stationary permutation device to control said means and said permutation device, a tabulating device controlled by said means for controlling the advancementwof' said carriage a plurality of spaces at a time from one recording position to another, a transmitting means controlled by a signal storing medium, said transmitting means comprising a primary and a secondary means for said signal storing medium, means for control.

ling the effectiveness of said primary means, and

means in said recorder controlled by said tabulating device and effective eonjointly with said secondary means for controlling the effectiveness of said last mentioned means.

12. In combination, a telegraph recorder, selector mechanism responsive tocode signals, a type carriage, spacing mechanism operative norrnally to control the advancement of said type carriage one character space at a time, tabulating mechanism effective under the control of said selector mechanism to control the advancement of said type carriage through a plurality Vof spaces at a time, a transmitting means eiective under the control of a signal storing medium, said transmitting means comprising a. primary and a secondary means for said signal storing medium, means for controlling the effectiveness of said primary means, and means in said recorder controlled by said tabulating mechanism and effective conjointly with said secondary means for controlling the effectiveness of said last mentioned means.

13. In combination, a recorder responsive to signal conditions, transmitting apparatus comprising means for distributing signal impulses, a set of control elements positioned in accordance with the signal impulses to be transmitted by said distributor, `means effective when said control elements are in a predetermined position for stopping said distributor, and means in said recorder effective under certain operating conditions for restarting said distributor.

RAYMOND E. ZENNER. 

